Pros
Like most large companies, COUNTRY prefers to hire from within and makes job postings available to current employees prior to posting them externally. Therefore, if you get your foot in the door and you are smart and talented, you can move up (or sideways) quickly. I started in the Billing call center, was there 13 months, and then moved to a salaried position as an eLearning Developer. After 10 months I was offered a promotion within the job family and a huge raise, but I am leaving for even more money and less busywork at another company.
Cons
This is more about my specific situation: I was only at COUNTRY for two years and can't fairly speak about the company as a whole. I was going above and beyond my job description and training all my peers in the department, but I was at the bottom of the payscale. My boss and her boss recognized this when I started to look at other opportunities, and offered me a new title and a huge raise, but it was too little too late.